$172+ Cheap flights from Baltimore (BWI) to Ottawa (YOW)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — YOW
Sep 7 — Sep 141
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Baltimore to Ottawa with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Baltimore to Ottawa
Cheapest
Best
Last-minute
One-way
Cheapest flights from Baltimore to OttawaExplore the most affordable flight options available from Baltimore to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
Explore the most affordable flight options available from Baltimore to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:29 pm -
2 stops19h 15m
Fri 10/308:00 am -
1 stop10h 32m
Deal found 8/7![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:55 pm -
1 stop25h 12m
Fri 9/257:00 am -
1 stop25h 31m
Deal found 8/4![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:55 pm -
1 stop25h 12m
Tue 9/222:10 pm -
2 stops24h 01m
Deal found 8/5![Multiple Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:28 pm -
2 stops17h 52m
Mon 9/74:15 pm -
1 stop29h 15m
Deal found 8/3![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:32 pm -
2 stops18h 43m
Sat 9/127:00 am -
1 stop7h 11m
Deal found 8/3![Multiple Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:22 am -
2 stops28h 45m
Sat 9/267:00 am -
1 stop11h 09m
Deal found 8/5![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:45 am -
2 stops29h 35m
Mon 9/74:15 pm -
1 stop29h 15m
Deal found 8/7![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:20 pm -
1 stop25h 35m
Mon 8/314:15 pm -
1 stop7h 44m
Deal found 8/5![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:32 pm -
2 stops19h 51m
Mon 8/314:15 pm -
1 stop7h 44m
Deal found 8/6![Multiple Airlines logo]()
$546
Best flights from Baltimore to OttawaDiscover carefully curated flight deals from Baltimore to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
Discover carefully curated flight deals from Baltimore to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:29 pm -
1 stop8h 19m
Fri 10/237:00 am -
1 stop13h 57m
Deal found 8/3![Multiple Airlines logo]()
$476
This American Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:01 am -
2 stops8h 54m
Sat 10/37:00 am -
2 stops12h 33m
Deal found 8/8![American Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:10 pm -
1 stop9h 25m
Tue 9/296:25 am -
1 stop11h 18m
Deal found 8/8![United Airlines logo]()
$883
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:24 am -
1 stop8h 09m
Fri 9/118:55 pm -
2 stops40h 05m
Deal found 8/7![Multiple Airlines logo]()
$720
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:39 am -
2 stops9h 21m
Tue 9/227:00 am -
2 stops10h 41m
Deal found 8/3![American Airlines logo]()
$759
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:10 pm -
1 stop9h 25m
Sun 9/2710:37 am -
1 stop12h 22m
Deal found 8/6![United Airlines logo]()
$883
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:39 am -
2 stops12h 29m
Sun 11/227:00 am -
2 stops10h 15m
Deal found 8/7![American Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:25 am -
1 stop8h 51m
Tue 9/2210:37 am -
1 stop7h 05m
Deal found 8/5![United Airlines logo]()
$883
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:00 am -
2 stops8h 55m
Fri 9/118:40 am -
2 stops13h 16m
Deal found 8/7![American Airlines logo]()
$858
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:05 am -
1 stop15h 30m
Sun 9/2710:37 am -
1 stop12h 22m
Deal found 8/7![United Airlines logo]()
$883
Last-minute flights from Baltimore to OttawaDiscover last-minute flight deals from Baltimore to Ottawa. Data last updated August 8, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Ottawa. Data last updated August 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:32 pm -
2 stops19h 51m
Mon 8/314:15 pm -
1 stop7h 44m
Deal found 8/6![Multiple Airlines logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:20 pm -
1 stop25h 35m
Mon 8/314:15 pm -
1 stop7h 44m
Deal found 8/5![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:28 pm -
2 stops17h 52m
Mon 9/74:15 pm -
1 stop29h 15m
Deal found 8/3![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:45 am -
2 stops29h 35m
Mon 9/74:15 pm -
1 stop29h 15m
Deal found 8/7![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:32 pm -
2 stops18h 43m
Sat 9/127:00 am -
1 stop7h 11m
Deal found 8/3![Multiple Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:55 pm -
1 stop25h 12m
Fri 9/257:00 am -
1 stop25h 31m
Deal found 8/4![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:55 pm -
1 stop25h 12m
Tue 9/222:10 pm -
2 stops24h 01m
Deal found 8/5![Multiple Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:10 pm -
2 stops26h 25m
Sat 9/267:00 am -
1 stop11h 09m
Deal found 8/5![Multiple Airlines logo]()
$557
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:22 am -
2 stops28h 45m
Sat 9/267:00 am -
1 stop11h 09m
Deal found 8/5![Multiple Airlines logo]()
$477
One-way flights from Baltimore to OttawaSearch for one-way flight options from Baltimore to Ottawa. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
Search for one-way flight options from Baltimore to Ottawa. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:22 am -
2 stops28h 45m
Deal found 8/4![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:00 am -
2 stops33h 07m
Deal found 8/6![Multiple Airlines logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:55 pm -
1 stop25h 12m
Deal found 8/6![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:20 pm -
2 stops31h 40m
Deal found 8/8![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:28 pm -
2 stops17h 52m
Deal found 8/6![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:25 pm -
3 stops35h 55m
Deal found 8/4![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:04 pm -
1 stop23h 29m
Deal found 8/3![Multiple Airlines logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:52 pm -
2 stops23h 58m
Deal found 8/7![Multiple Airlines logo]()
$240
Find flight deals from Baltimore to Ottawa
Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $427 (Kiwi.com) |
One-way from | $172 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $437 |
Cheapflights Fare Finder
Customize your flight search to find flights from Baltimore to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 8, 2026.
Use the filters below to find and compare flights from Baltimore to Ottawa that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Mon 10/19
3:29 pm-11:48 pm
1 stop8h 19m
Ottawa
Fri 10/23
7:00 am-8:57 pm
1 stop13h 57m
$476
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Fri 9/4
6:24 am-2:33 pm
1 stop8h 09m
Ottawa
Fri 9/11
8:55 pm-1:00 pm
2 stops40h 05m
$720
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Thu 10/1
6:01 am-2:55 pm
2 stops8h 54m
Ottawa
Sat 10/3
7:00 am-7:33 pm
2 stops12h 33m
$725
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Wed 9/16
10:39 am-8:00 pm
2 stops9h 21m
Ottawa
Tue 9/22
7:00 am-5:41 pm
2 stops10h 41m
$759
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Sun 11/15
9:39 am-10:08 pm
2 stops12h 29m
Ottawa
Sun 11/22
7:00 am-5:15 pm
2 stops10h 15m
$815
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Fri 9/4
6:00 am-2:55 pm
2 stops8h 55m
Ottawa
Fri 9/11
8:40 am-9:56 pm
2 stops13h 16m
$858
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Tue 9/22
12:10 pm-9:35 pm
1 stop9h 25m
Ottawa
Tue 9/29
6:25 am-5:43 pm
1 stop11h 18m
$883
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Fri 9/25
12:10 pm-9:35 pm
1 stop9h 25m
Ottawa
Sun 9/27
10:37 am-10:59 pm
1 stop12h 22m
$883
Quickest round-trip
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Fri 9/18
8:25 am-5:16 pm
1 stop8h 51m
Ottawa
Tue 9/22
10:37 am-5:42 pm
1 stop7h 05m
$883
BaltimoreOttawa
BWI Baltimore/Washington - YOW Ottawa
BWIYOW
Baltimore/Washington
Wed 9/23
6:05 am-9:35 pm
1 stop15h 30m
Ottawa
Sun 9/27
10:37 am-10:59 pm
1 stop12h 22m
$883
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Baltimore to Ottawa
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Ottawa in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Baltimore-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Ottawa flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Baltimore-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Baltimore to Ottawa
Have a flexible travel schedule? Discover the best time to fly to Ottawa from Baltimore with our price prediction graph.
BWI-YOW
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ottawa?
Book flights to Ottawa if you plan to visit one of these locationsGatineau
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Ottawa flight routes
Popular flights